body{
    text-align: center;
    position: relative;
    background: rgba(119,136,153,0.4);
}
.Mine{
    width: 960px;
    margin: 0 auto;
    border: 1px solid black;
    border-radius: 20px;
    box-shadow: 2px 6px 10px gray;
    background: rgba(255,255,255,0.5);
}
.level{
    margin-top: 30px;
    font-size: 18px;
}
.level button{
    padding: 3px 8px;
    background: rgba(30,144,255,0.7);
    border: none;
    color: white;
    border-radius: 3px;
    outline: none;
    cursor:pointer;
}
.level button:hover{
    background: rgb(30,144,255);
}
.row{
    margin: 0;
    padding: 0;
    overflow: hidden;
    letter-spacing: -8px;/*设置字母间的间隔*/
}
.col{
    display: inline-block;
    background: rgba(30,144,255,0.7);
    border: 1px solid rgb(30,144,255,1);
    margin: 1.5px;
    width: 23px;
    height: 23px;
    letter-spacing: normal;
    position: relative;
}
.col span{
    display: inline-block;
    position: relative;
    top: 2px;
    opacity: 0;
    font-weight: bold;
    cursor:pointer;
}
.col:hover{
    background: rgb(30,144,255,1);
}
.game{
    margin-top: 30px;
}

.img-flag{
    position:absolute;
    top: 3px;
    left: 3.5px;
    width: 18px;
    height: 18px;
}
.hide{
    display: none;
}
.boom{
    background: url('mine.jpg') no-repeat 2.5px 2px;
    background-size: 18px 18px;
}
.div-boom{
    font-size: 30px;
    position: fixed;
    top: 50%;
    left: 50%;
}
.info{
    margin-top: 30px;
}
.info p{
    display: inline-block;
    width: 130px;
    margin: 0 10px;
}
.info p span{
    color: rgba(0,0,255,0.4);
}

.num-1 {
    color: rgb(8, 153, 235);
}
.num-2 {
    color: rgb(255, 45, 178);
}
.num-3 {
    color: rgb(109, 224, 176);
}
.num-4 {
    color: rgb(8, 153, 235);
}
.num-5 {
    color: rgb(255, 167, 45);
}
.num-6 {
    color: rgb(49, 140, 102);
}
.num-7 {
    color: rgb(168, 55, 237);
}
.num-8 {
    color: rgb(15, 254, 154);
}